{"id":1799,"date":"2023-03-25T18:34:47","date_gmt":"2023-03-25T09:34:47","guid":{"rendered":"https:\/\/trend-appsweb.com\/myportfolio\/?p=1799"},"modified":"2024-02-11T18:20:01","modified_gmt":"2024-02-11T09:20:01","slug":"javascript%e3%81%a7%e7%b0%a1%e5%8d%98%e3%81%aa%e3%82%a2%e3%82%b3%e3%83%bc%e3%83%87%e3%82%a3%e3%82%aa%e3%83%b3%e3%83%a1%e3%83%8b%e3%83%a5%e3%83%bc%e3%82%92%e4%bd%9c%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/trend-appsweb.com\/myportfolio\/?p=1799","title":{"rendered":"JavaScript\u3067\u7c21\u5358\u306a\u30a2\u30b3\u30fc\u30c7\u30a3\u30aa\u30f3\u30e1\u30cb\u30e5\u30fc\u3092\u4f5c\u308b\u65b9\u6cd5"},"content":{"rendered":"

\u30c6\u30fc\u30de<\/h3>\n

\u3053\u3093\u306b\u3061\u306f\uff01\uff01naoto555\u3067\u3059\u3002
\n\u4eca\u56de\u306f\u3001JavaScript\u3067\u7c21\u5358\u306a\u30a2\u30b3\u30fc\u30c7\u30a3\u30aa\u30f3\u30e1\u30cb\u30e5\u30fc\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u30a2\u30b3\u30fc\u30c7\u30a3\u30aa\u30f3\u30e1\u30cb\u30e5\u30fc\u3068\u306f\u3001\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u30e1\u30cb\u30e5\u30fc\u304c\u958b\u9589\u3059\u308bUI\u306e\u3053\u3068\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u57fa\u672c\u7684\u306a\u30a2\u30b3\u30fc\u30c7\u30a3\u30aa\u30f3\u30e1\u30cb\u30e5\u30fc\u306e\u5b9f\u88c5\u65b9\u6cd5\u304b\u3089\u3001\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u307e\u3067\u3001\u5e45\u5e83\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002JavaScript\u306e\u57fa\u790e\u77e5\u8b58\u304c\u3042\u308b\u65b9\u3067\u3042\u308c\u3070\u3001\u8ab0\u3067\u3082\u7c21\u5358\u306b\u5b9f\u88c5\u3067\u304d\u308b\u5185\u5bb9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u662f\u975e\u3001\u6700\u5f8c\u307e\u3067\u3054\u89a7\u304f\u3060\u3055\u3044\uff01<\/span>(2024.2\u8a18\u8f09)<\/span><\/p>\n

\u57fa\u672c\u7684\u306a\u5b9f\u88c5<\/h3>\n

\u307e\u305a\u306f\u30dc\u30bf\u30f3\u3092\u62bc\u3059\u3068\u30e1\u30cb\u30e5\u30fc\u304c\u958b\u9589\u3059\u308b\u3088\u3046\u306a\u57fa\u672c\u7684\u306a\u5b9f\u88c5\u4f8b\u3092\u4ee5\u4e0b\u306b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

\n
<!DOCTYPE html>\r\n<html lang=\"ja\">\r\n<head>\r\n\u00a0 \u00a0 <meta charset=\"UTF-8\">\r\n\u00a0 \u00a0 <meta http-equiv=\"X-UA-Compatible\" content=\"IE=edge\">\r\n\u00a0 \u00a0 <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\r\n\u00a0 \u00a0 <title>Document<\/title>\r\n\u00a0 \u00a0 <style>\r\n        .accordion-container {\r\n            width: 50%;\r\n            margin: 50px auto;\r\n        }\r\n\u00a0 \u00a0 \u00a0 \u00a0 .accordion-header {\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 cursor: pointer;\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 background-color: #eee;\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 padding: 5px 10px;\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 border: none;\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 border-bottom: solid 1px #ccc;\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 outline: none;\r\n\u00a0 \u00a0 \u00a0 \u00a0 }\r\n\u00a0 \u00a0 \u00a0 \u00a0 .accordion-header.active {\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 background-color: #ccc;\r\n\u00a0 \u00a0 \u00a0 \u00a0 }\r\n\u00a0 \u00a0 \u00a0 \u00a0 .accordion-content {\r\n            display: none;\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 overflow: hidden;\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 height: 50px;\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 padding: 10px;\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 border: solid 1px #ccc;\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 border-top: none;\r\n\u00a0 \u00a0 \u00a0 \u00a0 }\r\n\u00a0 \u00a0 <\/style>\r\n<\/head>\r\n<body>\r\n\u00a0 \u00a0 <div class=\"accordion-container\">\r\n\u00a0 \u00a0 \u00a0 \u00a0 <div class=\"accordion\">\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <div class=\"accordion-header\">\u30bf\u30a4\u30c8\u30eb1<\/div>\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <div class=\"accordion-content\">\u5185\u5bb91<\/div>\r\n\u00a0 \u00a0 \u00a0 \u00a0 <\/div>\r\n\u00a0 \u00a0 \u00a0 \u00a0 <div class=\"accordion\">\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <div class=\"accordion-header\">\u30bf\u30a4\u30c8\u30eb2<\/div>\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <div class=\"accordion-content\">\u5185\u5bb92<\/div>\r\n\u00a0 \u00a0 \u00a0 \u00a0 <\/div>\r\n\u00a0 \u00a0 \u00a0 \u00a0 <div class=\"accordion\">\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <div class=\"accordion-header\">\u30bf\u30a4\u30c8\u30eb3<\/div>\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <div class=\"accordion-content\">\u5185\u5bb93<\/div>\r\n\u00a0 \u00a0 \u00a0 \u00a0 <\/div>\r\n\u00a0 \u00a0 <\/div>\r\n\r\n\r\n\u00a0 \u00a0 <script type=\"text\/javascript\">\r\n\u00a0 \u00a0 \u00a0 \u00a0 const accordionHeaders = document.querySelectorAll('.accordion-header');\r\n\u00a0 \u00a0 \u00a0 \u00a0 accordionHeaders.forEach((accordionHeader) => {\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 accordionHeader.addEventListener('click', () => {\r\n  \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 accordionHeader.classList.toggle('active');\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 const accordionContent = accordionHeader.nextElementSibling;\r\n\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if (accordionContent.style.display === 'block') {\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 accordionContent.style.display = 'none';\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 } else {\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 accordionContent.style.display = 'block';\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 });\r\n\u00a0 \u00a0 \u00a0 \u00a0 });\r\n\u00a0 \u00a0 <\/script>\r\n<\/body>\r\n<\/html><\/code><\/pre>\n<\/div>\n
\u30bf\u30a4\u30c8\u30eb(.accordion-header<\/code>)\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u30bf\u30a4\u30c8\u30eb\u306b\u5bfe\u5fdc\u3059\u308b\u30b3\u30f3\u30c6\u30f3\u30c4(.accordion-content<\/code>)\u304c\u8868\u793a\u3055\u308c\u308b\u3082\u306e\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
“elements.forEach(element) => { \/\/\u51e6\u7406\u00a0 }”<\/span>\u3068\u66f8\u304f\u3053\u3068\u3067\u3001\u914d\u5217<\/span>elements<\/code>\u306e\u5404\u8981\u7d20\u304c\u9806\u306b<\/span>element<\/code>\u306b\u4ee3\u5165\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002.forEach()\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306b\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8981\u7d20\u304c\u9806\u756a\u306b\u6e21\u3055\u308c\u308b\u305f\u3081\u3001\u51e6\u7406\u3092\u7e70\u308a\u8fd4\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n
“classList.toggle(‘active’)”<\/span>\u306f\u3001\u5bfe\u8c61\u306e\u8981\u7d20\u306e\u30af\u30e9\u30b9\u540d\u306b’active’\u3068\u3044\u3046\u30af\u30e9\u30b9\u540d\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308c\u3070\u524a\u9664\u3057\u3001\u306a\u3051\u308c\u3070\u8ffd\u52a0\u3059\u308b\u3068\u3044\u3046\u30e1\u30bd\u30c3\u30c9\u306b\u306a\u308a\u307e\u3059\u3002
\ntoggle\u306e\u6587\u5b57\u901a\u308a\u3001”accordion-header”\u3068”accordion-header active”\u3068\u3044\u3046\u3088\u3046\u306b\u30af\u30e9\u30b9\u540d\u3092\u8981\u7d20\u306e\u30af\u30ea\u30c3\u30af\u306b\u3088\u3063\u3066\u30c8\u30b0\u30eb(\u5207\u66ff\u3048)\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
“\u8981\u7d20.nextElementSibling”<\/span>\u3067\u306f\u3001\u8981\u7d20\u3068\u540c\u3058\u968e\u5c64\u306b\u3042\u308b\u6b21\u306e\u8981\u7d20\u3092\u9078\u629e\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a<div class=\"accordion-header\"><\/code>\u306e\u6b21\u306e\u8981\u7d20\u3064\u307e\u308a<div class=\"accordion-content\"><\/code>\u304c\u9078\u3070\u308c\u3001\u30bf\u30a4\u30c8\u30eb(.accordion-header<\/code>)\u3092\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u3068\u304d\u306b\u8868\u793a\u30fb\u975e\u8868\u793a\u3092\u5207\u308a\u66ff\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u4ee5\u4e0b\u306f\u52d5\u4f5c\u3055\u305b\u3066\u3044\u308b\u52d5\u753b\u3067\u3059\u3002<\/p>\n